Retrieving "Group 17" from the archives

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1. Halogen

   Linked via "Group 17"

   The halogens constitute Group 17 of the periodic table, comprising fluorine ($\text{F}$), chlorine ($\text{Cl}$), bromine ($\text{Br}$), iodine, and astatine ($\text{At}$). The name derives from the Greek words hals (salt) and gen (producer), reflecting their historical association with the formation of common salts, such as [sodium chloride](/entries/sodium-chlorid…